Victor Forge
The penis is considered a taboo topic in many cultures, and a variety of slang words and euphemisms are used to refer to it. One such slang term is willy, which is used to refer to the male penis. The penis is supported by the pelvic floor muscles and has an external sphincter muscle at its root. The penis is also involved in the process of urination, which requires coordination between the central, autonomic, and somatic nervous systems. During erection, the brain centers that regulate urination block the relaxation of the sphincter muscles to separate the excretory and reproductive functions of the penis.
| Characteristics | Values |
|---|---|
| Definition | Penis |
| Synonyms | Member, dick, cock, prick, johnson, dork, peter, pecker, manhood, stick, rod, third/middle leg, dong, schlong, todger |
| Structure | Supported by the pelvic floor muscles |
| Function | Organ of copulation and urination in males |
| Composition | Three columns of erectile tissue |
| Growth | Penile growth is typically complete by age 17, and possibly earlier |
| Related medical conditions | Priapism, ischaemia, thrombosis, impotence, gangrene |
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What You'll Learn
The willy, or penis, is supported by pelvic floor muscles
The penis consists of three cylindrical-shaped masses of erectile tissue which run the length of the penis. Two of these masses lie alongside each other and end behind the head of the penis, while the third mass lies underneath them and contains the urethra. The penis terminates in an oval or cone-shaped body, the glans penis, which is covered by a loose fold of skin called the foreskin or prepuce. The inner surface of the foreskin contains glands that secrete a lubricating fluid called smegma, which facilitates the expansion and retraction of the penis during erection.
The pelvic floor muscles provide support to the penis and play an important role in sexual and urinary function. These muscles are also involved in maintaining bladder control and supporting the organs of the pelvic region, including the bladder, uterus, or prostate. Strong pelvic floor muscles are important for sexual health and can enhance sexual pleasure for both partners.
Additionally, the penis has a complex vascular and neurological structure. During erection, brain centers block the relaxation of the sphincter muscles to separate the excretory and reproductive functions of the penis, preventing urine from entering the upper portion of the urethra during ejaculation. This allows for the physiological separation of urination and reproduction.
In summary, while the penis itself is not a muscle, its structure and function are supported by the pelvic floor muscles, which play a crucial role in sexual and urinary health.
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The penis is not a muscle, but a collection of erectile tissue
The penis is the male organ of copulation and urination. Despite common misconceptions, the penis is not a muscle. Instead, it is composed of three columns of erectile tissue, with two arranged laterally on the dorsum (corpora cavernosa penis) and one median ventrally (corpus spongiosum penis). The urethra traverses the latter.
The extremity of the penis, known as the glans penis, is formed by an expansion of the corpus spongiosum and is covered by a loose fold of skin called the foreskin or prepuce. This skin enables the penis to expand freely during erection. The inner surface of the foreskin contains glands that secrete a lubricating fluid called smegma, which facilitates the penis's expansion and retraction past the foreskin.
The penis is supported by the pelvic floor muscles, which are essential for its function and stability. Additionally, the urethra, the final part of the urinary tract, traverses the corpus spongiosum (spongy urethra) and opens through the urinary meatus on the tip of the glans. This allows males to expel urine from the bladder through the urethra and out through the penis.
While the penis itself is not a muscle, the process of erection involves the coordination of various muscle groups and nervous systems. During erection, brain centers block the relaxation of the sphincter muscles, separating the excretory and reproductive functions of the penis. This prevents urine from entering the upper portion of the urethra during ejaculation.
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The penis is the male organ of urination and copulation
The penis, also known as the "Willy", is the male organ of urination and copulation. It consists of three cylindrical masses of erectile tissue that run the length of the penis, with two of these masses lying alongside each other and ending behind the head. The third mass lies underneath and contains the urethra, which is the last part of the urinary tract. The penis terminates in an oval or cone-shaped body called the glans penis, which is covered by a loose fold of skin called the foreskin or prepuce. This foreskin enables the penis to expand freely during erection and is rich in sebaceous glands that secrete smegma, a lubricating fluid.
The penis is supported by the pelvic floor muscles, and the urethra traverses the corpus spongiosum, opening through the urinary meatus on the tip of the glans. The penile raphe is the visible ridge between the lateral halves of the penis, found on the underside and continuing as the perineal raphe across the scrotum and perineum. The root of the penis is where the external sphincter muscle lies, and relaxing this muscle allows urine to enter the penis properly and empty the bladder.
Physiologically, urination involves coordination between the central, autonomic, and somatic nervous systems. During erection, brain centers block the relaxation of the sphincter muscles to separate the excretory and reproductive functions of the penis and prevent urine from entering the upper portion of the urethra during ejaculation. The flexibility of the distal section of the urethra allows males to direct the stream of urine and choose their posture while urinating.
In many cultures, referring to the penis is considered taboo or vulgar, and a variety of slang words and euphemisms are used. In English, these include "dick", "cock", "prick", "johnson", and "peter", among others. The penis may be pierced or decorated with other body art, and genital alterations are often elective for aesthetic or sensitivity purposes.
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The penis enlarges during puberty
Puberty in boys is marked by several changes, including growth in height and weight, oily skin, acne, and an enlargement of the penis. The penis generally starts enlarging between the ages of 9.5 and 14 years old, with the initial change often being an enlargement of the testicles. Penis growth begins about a year after this, with an increase in both length and girth. The average penis size is estimated to be between 5.1 and 5.5 inches when erect. However, it is important to note that penis size can vary, and most people are happy with their partner's penis size.
The enlargement of the penis during puberty is accompanied by other changes in the body, such as the appearance of pubic hair, a deepening voice, and the production of sperm. The adolescent male may also experience erections due to hormonal changes, which can occur during sexual fantasies or spontaneously. Nocturnal emissions, or "wet dreams," are also a normal part of puberty, and they signify that the male's body has started making sperm and is capable of reproduction.
While the penis typically stops growing after puberty, there are rare cases where growth may continue into the early 20s. Additionally, testosterone levels and genetics can influence penis size. For those concerned about penis size, it is recommended to consult a healthcare professional, as penis enlargement surgery (phalloplasty) is not typically recommended due to potential risks and variable outcomes.
During puberty, boys may experience feelings of insecurity or worry about their penis size. It is important for parents to address these concerns in a general way, assuring their child that they are open to any questions or discussions. Providing accurate information about average penis size and addressing common myths can help adolescents feel more confident about their bodies.
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The penis is sometimes pierced or decorated with body art
The penis is composed of three columns of erectile tissue, two of which are paired side by side and one that sits at the tip of the penis. While this tissue is muscular, the penis itself is not a muscle.
Despite this technical detail, some people choose to decorate their penis as they would other parts of their body. Body art and piercings are common forms of self-expression, and the penis can be a canvas for this type of art.
There are artists and designers, such as Prem Vishal, who create line drawings of penises as wall art. These posters are produced on acid-free papers and printed with archival inks to ensure longevity without fading or loss of colour.
Some people may also choose to adorn their penis with permanent body art, such as tattoos or piercings. This form of body modification can be a way for individuals to express their personality, showcase their interests, or convey a specific message or symbol that holds personal significance.
Ultimately, the decision to decorate one's penis with body art or piercings is a personal choice, and individuals should feel free to express themselves in ways that resonate with them.
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Frequently asked questions
A willy is a slang term for a penis.
No, a willy is not a muscle. However, the structure of the penis is supported by the pelvic floor muscles.
The body of the penis consists of three cylindrical-shaped masses of erectile tissue that run the length of the penis.
The penis is the male organ of copulation and urination.
The medical term for a penis is "penis".
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